Patriots vulnerable in AFC; Steelers, Texans and Chargers among challengers

With the NFL Draft behind us, Matt Verderame and Josh Hill look ahead to the summer and wonder which teams in the AFC are capable of dethroning the New Englan Patriots. The Pittsburgh Steelers are the obvious choice, but Hill isn't so convinced. Plus, can the Houston Texans finally get healthy and make a run, and what about Philip Rivers and the Los Angeles Chargers? Finally, the Jacksonville Jaguars and Kansas City Chiefs loom as threats, although both have serious question marks.